Crude has fallen hard while I wrote this. WTI settled near $82.40 on 25 August and traded near $80.50 the next morning, down over 5% in two sessions, as talk of an interim shipping corridor through Hormuz gathered pace. My invalidation level sits at $80.91, so the market is testing this piece in real time. Below, I’ll set out why the bid under crude now lives at the refinery gate, and what breaks it.